References:
Starting data given at [
http://ssd.jpl.nasa.gov/horizons.cgi#top] is
…….
Ephemeris Type [change]: VECTORS
Target Body [change] :
New Horizons Spacecraft [NH New_Horizons (Spacecraft)] [-98]
Coordinate Origin [change] :
Sun (body center) [500@10]
Time Span [change] :
Start=2009-01-01, Stop=2009-08-09, Step=1 d
Table Settings [change] :
output units=KM-S; labels=YES; CSV format=YES
Display/Output [change] :
default (formatted HTML)
=====
The website [
http://ssd.jpl.nasa.gov/horizons.cgi#results ] gives initial part of output as:
************************************************** *****************************
JDCT , , X, Y, Z, VX, VY, VZ, LT, RG, RR,
************************************************** *****************************
$$SOE
2454832.500000000, A.D. 2009-Jan-01 00:00:00.0000, 1.831893455702002E+07, -1.802262411312388E+09, 4.846124849130476E+07, 5.934007305388568E+00, -1.639090119518093E+01, 6.204177119092869E-01, 6.014183646564395E+03, 1.803006898266943E+09, 1.646109953796153E+01,
2454833.500000000, A.D. 2009-Jan-02 00:00:00.0000, 1.883163093861168E+07, -1.803678432152277E+09, 4.851484847298443E+07, 5.933962828747228E+00, -1.638735887443054E+01, 6.203228521582478E-01, 6.018927444267887E+03, 1.804429053040728E+09, 1.645914910252247E+01,
….
….
…
2455052.500000000, A.D. 2009-Aug-09 00:00:00.0000, 1.309131513493618E+08, -2.107161888100003E+09, 6.007219709967124E+07, 5.908152805830975E+00, -1.572533280447273E+01, 6.020855006869130E-01, 7.045137555628733E+03, 2.112079104750050E+09, 1.607205212544533E+01,
$$EOE
************************************************** *****************************
Coordinate system description:
Ecliptic and Mean Equinox of Reference Epoch
Reference epoch: J2000.0
xy-plane: plane of the Earth's orbit at the reference epoch
x-axis : out along ascending node of instantaneous plane of the Earth's
orbit and the Earth's mean equator at the reference epoch
z-axis : perpendicular to the xy-plane in the directional (+ or -) sense
of Earth's north pole at the reference epoch.